The ratio of time of return stroke to time of forward stroke of a shaping machine is 0.6. The stroke is 250 mm and it makes 30 double strokes per minute. What is the overall average speed of operation?

The ratio of time of return stroke to time of forward stroke of a shap

1.	The ratio of time of return stroke to time of forward stroke of a shaping machine is 0.6. The stroke is 250 mm and it makes 30 double strokes per minute. What is the overall average speed of operation?
A.	3.75 m/min
B.	5.0 m/min
C.	7.5 m/min
D.	12 m/min
Answer» D. 12 m/min

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The ratio of time of return stroke to time of forward stroke of a shaping machine is 0.6. The stroke is 250 mm and it makes 30 double strokes per minute. What is the overall average speed of operation?

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